There are several ways of removing this tissue but the investigators do not know which is best. The standard treatment is surgery, but there is a small risk of dying from the operation, and patients often suffer complications affecting them for a year or more afterwards. Two endoscopic treatments do not involve surgery. Both involve removing visible abnormalities by a technique called endoscopic resection, followed by cauterising the remaining Barrett's gullet lining by 1 of 2 techniques. One is recommended by the National Institute for Health and Clinical Excellence, but it is expensive and less widely available than the second. No-one has compared these treatments with each other, nor with surgery, in randomised trials (the most reliable way of deciding which is best). Patient groups say they would prefer to avoid surgery if the alternative works, and have encouraged us to do trials.